CN210359740U - Gas metal arc welding gun - Google Patents
Gas metal arc welding gun Download PDFInfo
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- CN210359740U CN210359740U CN201920957335.0U CN201920957335U CN210359740U CN 210359740 U CN210359740 U CN 210359740U CN 201920957335 U CN201920957335 U CN 201920957335U CN 210359740 U CN210359740 U CN 210359740U
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- servo motor
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- connecting seat
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Abstract
The utility model discloses a gas metal arc welding gun, which comprises a gun neck and a welding wire driving part; the welding wire driving part is arranged on one side of the neck of the welding gun, which is far away from a nozzle of the welding gun, and comprises an alternating current servo motor and a connecting seat; the connecting seat is directly contacted with the alternating current servo motor and is made of metal materials; the utility model discloses a connecting seat direct contact of AC servo motor and metal material, AC servo motor pass through metal connecting seat conduction heat dissipation, improve AC servo motor's operational environment, promote welder's temporary capacity index, make equipment possess the ability that promotes production efficiency, reduction in production cost.
Description
Technical Field
The utility model relates to a welding field's device especially relates to consumable electrode gas shielded arc welding welder.
Background
The gas metal arc welding has high welding efficiency and good welding seam quality, and is widely applied in the industrial field. The welding wire of the gas metal arc welding is conveyed by a welding gun, and along with the development of the welding technology, the gas metal arc welding drives the welding wire in the welding gun to move forward or backward through a front wire feeder and a rear wire feeder. The wire feeder at the front part of the welding gun is closer to the gun neck of the welding gun, and the AC servo motor is electrically isolated by arranging an insulating material at the mounting position of the AC servo motor of the wire feeder due to the requirement of electrical isolation. The insulation material at the ac servo motor of the wire feeder is usually polyester material, which has a high resistivity, but has a poor heat dissipation, a small elastic modulus, and a large elastic deformation compared to metals such as steel, copper alloy, and aluminum alloy. Therefore, when the conventional welding gun is used, the problems that the alternating current servo motor of the front wire feeder generates heat seriously and the heat dissipation is poor, and the alternating current servo motor is easy to loosen after long-term use exist, particularly, the temporary loading rate is low due to the heat dissipation problem of the motor, the actual working time is prolonged, the working efficiency is reduced, and the production cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of prior art, provide an effective anterior silk ware AC servo motor's that send of cooling welder consumable electrode gas shielded arc welding welder.
The utility model adopts the following technical scheme: a gas metal arc welding gun comprises a gun neck and a welding wire driving part; the welding wire driving part is arranged on one side of the neck of the welding gun, which is far away from a nozzle of the welding gun, and comprises an alternating current servo motor and a connecting seat;
the connecting seat is in direct contact with the alternating current servo motor and is made of metal materials.
Optionally, the metal material includes, but is not limited to, steel, iron, copper and copper alloys, aluminum and aluminum alloys.
Further, at least one flow channel for a cooling medium to pass through is arranged in the connecting seat.
Furthermore, the connecting seat directly contacts with the motor and is in surface contact.
Optionally, the contact surface is a plane, a spherical surface or an odd curved surface.
Furthermore, the welding wire driving part also comprises a driving wheel and a driven wheel, the driving wheel is positioned on the other side of the connecting seat relative to the motor, and an output shaft of the motor penetrates through the connecting seat and then is connected with the driving wheel; the driven wheel and the driving wheel are arranged correspondingly, the welding wire passing through the driven wheel and the driving wheel is clamped by the driven wheel and the driving wheel, the driving wheel drives the welding wire to move, and the welding wire enters the neck of the welding gun after passing through the driven wheel and the driving wheel.
Further, the connecting seat includes location portion, location portion is close to welder neck one side, along welder neck axial extension, location portion middle part sets up the welding wire hole.
Optionally, the positioning part can be positioned by a boss or a groove or a positioning point; boss positioning or groove positioning is adopted, and the cross section of the boss or the groove can be circular or polygonal; the positioning of the positioning points is adopted, wherein convex points or concave points or other positioning points for positioning are part of the positioning part.
Further, the alternating current servo motor is electrically connected with an external servo motor controller, and the alternating current servo motor is independently grounded through the servo motor controller.
Furthermore, the servo motor controller is connected with an isolation transformer, and one primary end of the isolation transformer is grounded.
Further, the cooling medium is one or two of gas or liquid.
Alternatively, the cooling medium may be a gas or a liquid alone, or a gas and a liquid may be used at the same time; the cooling gas can be compressed air alone or working gas in welding work; the cooling liquid can be water or other liquid, and the cooling water can also be cooling water of welding equipment.
Further, the width of the connecting seat is larger than that of the alternating current servo motor.
Further, the connecting seat is made of copper or copper alloy.
The utility model has the advantages that: the utility model discloses a connecting seat direct contact of AC servo motor and metal material, AC servo motor pass through metal connecting seat conduction heat dissipation, improve AC servo motor's operational environment, promote welder's temporary capacity index, make equipment possess the ability that promotes production efficiency, reduction in production cost.
Furthermore, the runner that sets up in the connecting seat can use fluid and connecting seat to carry out the heat exchange, improves the heat-sinking capability of connecting seat, further promotes the heat-sinking capability of connecting seat to servo motor.
Furthermore, the surface contact between connecting seat and the motor can effectively ensure contact, heat dissipation between connecting seat and motor.
Furthermore, the driving part and the driving wheel are arranged on two sides of the connecting seat relatively, so that the device is more compact and small, and the accessibility of the welding gun is improved.
Furthermore, the positioning part can enable the installation of the connecting seat to be more rapid and accurate; the wire hole can effectively guide the passing and guiding of the welding wire.
Further, pass through the servo motor controller with servo motor and connect and with the disconnection of power earthing terminal, can ensure the utility model discloses be suitable for all consumable electrode gas shielded welding equipment, enlarge the utility model discloses an application range.
Furthermore, the servo motor controller is connected through an isolation transformer, so that the anti-interference capability of the servo motor is improved, and the reliable work of the servo motor is ensured.
Furthermore, the gas has no influence on the environment, and the gas used as a cooling medium can be disposable, which is beneficial to simplifying the structure of the device; the specific heat capacity of the liquid is large, the cooling effect is good, the cooling water is recycled, and the real-time supply of the cooling water can be omitted.
Furthermore, the width of the connecting part is larger than that of the alternating current servo motor, so that the alternating current servo motor can be economically and effectively fixed on the plate-shaped part.
Furthermore, the copper alloy has a large heat conductivity coefficient, and the heat on the alternating current servo motor can be effectively and quickly conducted away by the copper alloy.
Drawings
FIG. 1 is a schematic structural view of one embodiment of a consumable electrode gas shielded welding torch according to the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 with the housing removed;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a schematic view of the connecting socket of FIG. 2;
FIG. 5 is one embodiment of the grounding of an AC servo motor;
FIG. 6 is another embodiment of grounding of an AC servo motor.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of one embodiment of a gas metal arc welding torch according to the present invention.
The welding gun in the embodiment comprises a welding gun nozzle, a welding gun neck 1 and a welding wire driving part 2, wherein the welding gun nozzle, the welding gun neck 1 and the welding wire driving part 2 are sequentially arranged, and during welding, a welding wire is conveyed to the welding gun neck through the welding wire driving part, reaches the welding gun nozzle through the welding gun neck and participates in work. Wherein, the outer surface of the welding wire driving part is provided with a shell 5 which is divided into a bottom part 51 and a top cover part 52.
Fig. 1 to 4 show the welding wire drive 2 with the top cover part 52 and the bottom part 51 removed, the welding wire drive 2 comprising a connection base 21, an ac servo motor 22, a drive wheel 23 and a driven wheel 24.
The connecting base 21 is made of a metal material, the connecting base 21 includes a connecting base body 211, and the connecting base body 211 is provided with an output shaft hole 2111. Two side surfaces of the connecting seat body 211 are respectively provided with an alternating current servo motor 22 and a driving wheel 23, and an output shaft of the alternating current servo motor 22 extends to the other surface of the connecting seat body 211 through an output shaft hole 2111 and is connected with the driving wheel 23. The ac servo motor 22 is in direct contact with the connecting socket body 211. As a specific embodiment, the connection socket 21 is made of copper alloy, and a contact surface between the ac servo motor 2 and the connection socket body 211 is a flat surface.
The driving wheel 23 and the driven wheel 24 are arranged in parallel, and the axial direction of the driving wheel 23 is parallel to the axial direction of the driven wheel 24. And a proper gap is arranged between the driving wheel 23 and the driven wheel 24 according to the diameter of the welding wire, so that enough friction is generated between the driving wheel 23 and the driven wheel 24 and the welding wire, and the welding wire is driven to move forwards or backwards. The connecting base 21 further comprises a positioning portion 212, the positioning portion 212 is matched with the rear end of the welding gun neck 2 in the corresponding position direction, a welding wire hole 2121 for a welding wire to pass through and for guiding or/and positioning is formed in the middle of the positioning portion 212, and the welding wire enters the welding gun neck 2 through the welding wire hole 2121. In a specific embodiment, the positioning portion 212 has a cylindrical shape, and the wire hole 2121 is coaxial with the positioning portion 212.
In the present embodiment, the ac servo motor 22 is a servo motor, and in order to reduce welding spatter during gas metal arc welding, the ac servo motor 22 guides the welding wire to move forward and backward in a reciprocating manner at a high frequency, wherein the forward movement is larger than the backward movement. The high frequency of positive and negative rotation of the servo motor causes the motor to generate a large amount of heat. Because the alternating current servo motor 22 directly contacts the connecting seat body 211 of the connecting seat 21, the heat of the alternating current servo motor 22 is transferred to the connecting seat 21 through heat conduction, the heat dissipation way of the alternating current servo motor is increased, and the working temperature of the alternating current servo motor is effectively reduced.
As shown in fig. 4, a cooling flow channel 213 is disposed inside the connection socket 21, and the cooling flow channel 213 is used for heat exchange between the cooling medium and the connection socket 21 through the cooling medium, so as to effectively reduce the temperature of the connection socket 21, so that the temperature of the connection socket body 211 of the connection socket 21 is lower than the temperature of the ac servo motor 22, and it is ensured that the connection socket body 211 can effectively cool the ac servo motor 22. In a specific embodiment, the connecting socket is provided with 3 cooling channels 213, wherein one channel 213 is used for supplying cooling gas, and the other two channels 213 are used for supplying circulating cooling water. The flow channel 213 through which the cooling air flows and the flow channel 213 through which the cooling water flows may be provided separately or simultaneously. In the present embodiment, the flow channel 213 for introducing cooling gas and the flow channel 213 for introducing cooling water exist at the same time, and the cooling gas passing through the flow channel 213 is a gas participating in welding work, and the working gas includes, but is not limited to, any one or more of argon, carbon dioxide, oxygen, hydrogen, and helium; the cooling water passing through flow passage 213 is recirculated cooling water that provides cooling to the torch and, in addition, oil is also a common cooling liquid medium. In the specific implementation of this embodiment, the cooling gas is not limited to the working gas used in welding, and may be a separate compressed gas, and the cooling water is also convenient for circulating cooling water of the welding equipment, and may also be a separate cooling water.
In the utility model discloses a further embodiment, the width of connecting seat body 211 is greater than the width of AC servo motor 22, and connecting seat body 211 and AC servo motor 22 direct contact set up the threaded connection hole with the position that the mounting hole of AC servo motor 22 shell department corresponds on connecting seat body 211, realize the rigid connection of AC servo motor 22 and connecting seat body 211 through threaded fastener such as screw or bolt. In the using process, the AC servo motor 22 drives the driving wheel 23 to rotate, and the driving wheel 23 drives the welding wire to move forward or backward under the coordination of the driven wheel 24; when the welding wire advances, the welding wire enters the welding wire hole 2121 through the driving wheel 23 and the driven wheel 24, passes through the welding wire hole 2121, enters the welding gun neck 2 and reaches the welding gun nozzle to participate in work. As a specific embodiment, the casing of the ac servo motor 22 is made of metal, and the metal appearance of the ac servo motor 22 is beneficial to transferring the heat generated by the ac servo motor 22 to the connection base 21. This implementation is when implementing, and AC servo motor 22 connects on connecting seat body 211 rigidly, can effectively fix and delay and prevent even that AC servo motor 22 is not hard up, improve equipment's stability.
In another embodiment of the present invention, as shown in fig. 5, the ac servo motor 22 is electrically connected to the servo motor controller 3, and the servo motor controller 3 is disconnected from the power ground terminal. In actual production, the output negative electrode of the welding machine is disconnected from the grounding end, and the output negative electrode of the welding machine is also connected with the grounding end. Because the connecting seat body 211 is directly contacted with the servo motor 22, when the welding output negative electrode is not conducted with the grounding end, the welding work can be smoothly carried out; however, when the welding output negative electrode is conducted with the grounding end, a welding wire, a driving wheel 23, an alternating current servo motor 22 and a welding machine negative electrode are formed, so that the welding work is abnormal. This embodiment is when implementing, because flow servo motor 22 and servo motor controller 3 electrical connection, servo motor controller 3 and power earthing terminal disconnection ensure that the welding machine whether the homoenergetic is conducted with the earthing terminal at the output negative pole and can implement weldment work smoothly, reduce the reliance to welding equipment negative pole and earthing terminal connected mode, make all consumable electrode gas shielded arc welding equipment homoenergetic use the utility model discloses, promote the application scope of the utility model.
In another embodiment of the present invention, as shown in fig. 6, the ac servo motor 22 is electrically connected to the servo motor controller 3, the servo motor controller 3 is connected to the isolation transformer 4, and the primary end of the isolation transformer 4 is grounded. The isolation transformer 4 can ensure effective electrical isolation of the servo motor controller 3 and the ac servo motor 22. When the utility model is implemented, the working voltage of the AC servo motor 22 is high, the grounding end of the servo motor controller 3 is grounded through the isolation transformer 4, so that the grounding ends of the servo motor controller 3 and the AC servo motor 22 are at a low potential, and potential safety hazards caused by the leakage of the AC servo motor 22 and the suspension of the grounding end of the AC servo motor 22 are avoided; in addition, the servo motor controller 3 and the alternating current servo motor 22 can be prevented from being interfered by interference signals due to suspension of the grounding ends, and the safe and stable operation of the equipment can be ensured.
And (3) comparison test:
adopt the utility model discloses the equipment contrasts with the welder of current structure.
The utility model discloses welder's connecting seat 21 and the direct contact of AC servo motor 22 wherein set up a cooling air runner on connecting seat 21, two cooling water runners, wherein the working gas that the welding was used is used to the cooling gas, and the cooling water that the welding equipment was used is used to the cooling water. The motor of the existing welding gun welding wire driving device is fixed with a connecting block of a welding gun through an insulating layer, and the motor of the driving device is naturally cooled without other additional devices.
The utility model discloses adopt the same welding parameter to contrast with the welder of current structure, the welding parameter is as follows:
welding objects are as follows: q235, butt welding a 30mm thick steel plate;
welding current: 300A; welding voltage: 33V
Welding speed: 200 cm/min;
welding gas: CO 22(ii) a Welding gas flow: 25L/min;
diameter of welding wire: 1.2 mm; wire feeding speed: 12 m/min; frequency of the AC servo motor: 100 Hz;
a welding system: anchuan MA1440 robot, RD500 welding power
When the welding gun with the existing structure is adopted and the equipment continuously works for 22min, the alternating current servo motor 22 sends out a high temperature alarm (the alarm temperature is 70 ℃).
When adopting the utility model discloses a welder adopts water-cooling, air-cooling simultaneously, welds 30 minutes, and the AC servo motor temperature is 30 ℃, for preventing the overheated damage of work piece and anchor clamps, stops the welding.
Adopt the utility model discloses can effectively promote welding equipment's temporary capacity rate, promote welding efficiency.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A gas metal arc welding gun is characterized by comprising a welding gun neck and a welding wire driving part; the welding wire driving part is arranged on one side of the neck of the welding gun, which is far away from a nozzle of the welding gun, and comprises an alternating current servo motor and a connecting seat;
the connecting seat is in direct contact with the alternating current servo motor and is made of metal materials.
2. The welding torch according to claim 1, wherein at least one flow passage for a cooling medium is provided inside the connecting base.
3. The welding torch of claim 1 wherein the connecting socket is in direct and surface contact with the motor.
4. The welding gun according to claim 1, wherein the welding wire driving part further comprises a driving wheel and a driven wheel, the driving wheel is located on the other side of the connecting base opposite to the motor, and an output shaft of the motor passes through the connecting base and then is connected with the driving wheel; the driven wheel and the driving wheel are arranged correspondingly, the welding wire passing through the driven wheel and the driving wheel is clamped by the driven wheel and the driving wheel, the driving wheel drives the welding wire to move, and the welding wire enters the neck of the welding gun after passing through the driven wheel and the driving wheel.
5. The welding gun according to claim 1, wherein the connecting base includes a positioning portion extending in an axial direction of the neck of the welding gun near one side of the neck of the welding gun, and a wire hole is provided in a middle portion of the positioning portion.
6. The welding torch of claim 1 wherein the ac servo motor is electrically connected to an external servo motor controller, the servo motor controller being disconnected from power ground.
7. The welding gun according to claim 6, wherein the servo motor controller is connected to an isolation transformer, and a primary side of the isolation transformer is grounded.
8. The gas metal arc welding torch as defined in claim 2 wherein the cooling medium is one or both of a gas and a liquid.
9. The gas metal arc welding torch according to any one of claims 1 to 8, wherein a width of the connection socket is larger than a width of the ac servo motor.
10. The gas metal arc welding gun according to any one of claims 1 to 8, wherein the connection socket is copper or a copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920957335.0U CN210359740U (en) | 2019-06-24 | 2019-06-24 | Gas metal arc welding gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920957335.0U CN210359740U (en) | 2019-06-24 | 2019-06-24 | Gas metal arc welding gun |
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| Publication Number | Publication Date |
|---|---|
| CN210359740U true CN210359740U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920957335.0U Active CN210359740U (en) | 2019-06-24 | 2019-06-24 | Gas metal arc welding gun |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193648A (en) * | 2019-06-24 | 2019-09-03 | 杭州凯尔达机器人科技股份有限公司 | Gas metal arc welding gun |
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2019
- 2019-06-24 CN CN201920957335.0U patent/CN210359740U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193648A (en) * | 2019-06-24 | 2019-09-03 | 杭州凯尔达机器人科技股份有限公司 | Gas metal arc welding gun |
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| CP03 | Change of name, title or address |
Address after: No. 778, Changming Road, hongken farm, Xiaoshan Economic and Technological Development Zone, Hangzhou, Zhejiang 311215 Patentee after: Hangzhou kelda welding robot Co.,Ltd. Address before: No. 6, kenhui fifth road, Xiaoshan Economic and Technological Development Zone, Xiaoshan District, Hangzhou, Zhejiang 311200 Patentee before: HANGZHOU KAIERDA ROBOT TECHNOLOGY Co.,Ltd. |